1061200540 has 48 divisors (see below), whose sum is σ = 2403061920. Its totient is φ = 392325120.

The previous prime is 1061200507. The next prime is 1061200549. The reversal of 1061200540 is 450021601.

It is a super-2 number, since 2×1061200540² = 2252293172192583200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061200549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18477 + ... + 49636.

It is an arithmetic number, because the mean of its divisors is an integer number (50063790).

Almost surely, 2^1061200540 is an apocalyptic number.

1061200540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061200540 is an abundant number, since it is smaller than the sum of its proper divisors (1341861380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1061200540 is a wasteful number, since it uses less digits than its factorization.

1061200540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68182 (or 68180 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1061200540 is about 32576.0731212342. The cubic root of 1061200540 is about 1019.9976098880.

It can be divided in two parts, 1061 and 200540, that added together give a square (201601 = 449²).

The spelling of 1061200540 in words is "one billion, sixty-one million, two hundred thousand, five hundred forty".